2 comedi/drivers/ke_counter.c
3 Comedi driver for Kolter-Electronic PCI Counter 1 Card
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 2000 David A. Schleef <ds@schleef.org>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 Description: Driver for Kolter Electronic Counter Card
26 Devices: [Kolter Electronic] PCI Counter Card (ke_counter)
27 Author: Michael Hillmann
28 Updated: Mon, 14 Apr 2008 15:42:42 +0100
31 Configuration Options:
32 [0] - PCI bus of device (optional)
33 [1] - PCI slot of device (optional)
34 If bus/slot is not specified, the first supported
35 PCI device found will be used.
37 This driver is a simple driver to read the counter values from
38 Kolter Electronic PCI Counter Card.
41 #include "../comedidev.h"
43 #include "comedi_pci.h"
45 #define CNT_DRIVER_NAME "ke_counter"
46 #define PCI_VENDOR_ID_KOLTER 0x1001
47 #define CNT_CARD_DEVICE_ID 0x0014
49 /*-- function prototypes ----------------------------------------------------*/
51 static int cnt_attach(struct comedi_device
* dev
, comedi_devconfig
* it
);
52 static int cnt_detach(struct comedi_device
* dev
);
54 static DEFINE_PCI_DEVICE_TABLE(cnt_pci_table
) = {
55 {PCI_VENDOR_ID_KOLTER
, CNT_CARD_DEVICE_ID
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
60 MODULE_DEVICE_TABLE(pci
, cnt_pci_table
);
62 /*-- board specification structure ------------------------------------------*/
71 static const cnt_board_struct cnt_boards
[] = {
73 name
: CNT_DRIVER_NAME
,
74 device_id
:CNT_CARD_DEVICE_ID
,
79 #define cnt_board_nbr (sizeof(cnt_boards)/sizeof(cnt_board_struct))
81 /*-- device private structure -----------------------------------------------*/
84 struct pci_dev
*pcidev
;
87 #define devpriv ((cnt_device_private *)dev->private)
89 static struct comedi_driver cnt_driver
= {
90 driver_name
:CNT_DRIVER_NAME
,
96 COMEDI_PCI_INITCLEANUP(cnt_driver
, cnt_pci_table
);
98 /*-- counter write ----------------------------------------------------------*/
100 /* This should be used only for resetting the counters; maybe it is better
101 to make a special command 'reset'. */
102 static int cnt_winsn(struct comedi_device
* dev
,
103 struct comedi_subdevice
* s
, comedi_insn
* insn
, unsigned int * data
)
105 int chan
= CR_CHAN(insn
->chanspec
);
107 outb((unsigned char)((data
[0] >> 24) & 0xff),
108 dev
->iobase
+ chan
* 0x20 + 0x10);
109 outb((unsigned char)((data
[0] >> 16) & 0xff),
110 dev
->iobase
+ chan
* 0x20 + 0x0c);
111 outb((unsigned char)((data
[0] >> 8) & 0xff),
112 dev
->iobase
+ chan
* 0x20 + 0x08);
113 outb((unsigned char)((data
[0] >> 0) & 0xff),
114 dev
->iobase
+ chan
* 0x20 + 0x04);
116 /* return the number of samples written */
120 /*-- counter read -----------------------------------------------------------*/
122 static int cnt_rinsn(struct comedi_device
* dev
,
123 struct comedi_subdevice
* s
, comedi_insn
* insn
, unsigned int * data
)
125 unsigned char a0
, a1
, a2
, a3
, a4
;
126 int chan
= CR_CHAN(insn
->chanspec
);
129 a0
= inb(dev
->iobase
+ chan
* 0x20);
130 a1
= inb(dev
->iobase
+ chan
* 0x20 + 0x04);
131 a2
= inb(dev
->iobase
+ chan
* 0x20 + 0x08);
132 a3
= inb(dev
->iobase
+ chan
* 0x20 + 0x0c);
133 a4
= inb(dev
->iobase
+ chan
* 0x20 + 0x10);
135 result
= (a1
+ (a2
* 256) + (a3
* 65536));
137 result
= result
- s
->maxdata
;
139 *data
= (unsigned int) result
;
141 /* return the number of samples read */
145 /*-- attach -----------------------------------------------------------------*/
147 static int cnt_attach(struct comedi_device
* dev
, comedi_devconfig
* it
)
149 struct comedi_subdevice
*subdevice
;
150 struct pci_dev
*pci_device
;
151 cnt_board_struct
*board
;
152 unsigned long io_base
;
155 /* allocate device private structure */
156 if ((error
= alloc_private(dev
, sizeof(cnt_device_private
))) < 0) {
160 /* Probe the device to determine what device in the series it is. */
161 for (pci_device
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, NULL
);
164 pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pci_device
)) {
165 if (pci_device
->vendor
== PCI_VENDOR_ID_KOLTER
) {
166 for (i
= 0; i
< cnt_board_nbr
; i
++) {
167 if (cnt_boards
[i
].device_id
==
168 pci_device
->device
) {
169 /* was a particular bus/slot requested? */
170 if ((it
->options
[0] != 0)
171 || (it
->options
[1] != 0)) {
172 /* are we on the wrong bus/slot? */
173 if (pci_device
->bus
->number
!=
175 || PCI_SLOT(pci_device
->
182 dev
->board_ptr
= cnt_boards
+ i
;
183 board
= (cnt_board_struct
*) dev
->
190 printk("comedi%d: no supported board found! (req. bus/slot: %d/%d)\n",
191 dev
->minor
, it
->options
[0], it
->options
[1]);
195 printk("comedi%d: found %s at PCI bus %d, slot %d\n", dev
->minor
,
196 board
->name
, pci_device
->bus
->number
,
197 PCI_SLOT(pci_device
->devfn
));
198 devpriv
->pcidev
= pci_device
;
199 dev
->board_name
= board
->name
;
201 /* enable PCI device and request regions */
202 if ((error
= comedi_pci_enable(pci_device
, CNT_DRIVER_NAME
)) < 0) {
203 printk("comedi%d: failed to enable PCI device and request regions!\n", dev
->minor
);
207 /* read register base address [PCI_BASE_ADDRESS #0] */
208 io_base
= pci_resource_start(pci_device
, 0);
209 dev
->iobase
= io_base
;
211 /* allocate the subdevice structures */
212 if ((error
= alloc_subdevices(dev
, 1)) < 0) {
216 subdevice
= dev
->subdevices
+ 0;
217 dev
->read_subdev
= subdevice
;
219 subdevice
->type
= COMEDI_SUBD_COUNTER
;
220 subdevice
->subdev_flags
= SDF_READABLE
/* | SDF_COMMON */ ;
221 subdevice
->n_chan
= board
->cnt_channel_nbr
;
222 subdevice
->maxdata
= (1 << board
->cnt_bits
) - 1;
223 subdevice
->insn_read
= cnt_rinsn
;
224 subdevice
->insn_write
= cnt_winsn
;
226 // select 20MHz clock
227 outb(3, dev
->iobase
+ 248);
229 // reset all counters
230 outb(0, dev
->iobase
);
231 outb(0, dev
->iobase
+ 0x20);
232 outb(0, dev
->iobase
+ 0x40);
234 printk("comedi%d: " CNT_DRIVER_NAME
" attached.\n", dev
->minor
);
238 /*-- detach -----------------------------------------------------------------*/
240 static int cnt_detach(struct comedi_device
* dev
)
242 if (devpriv
&& devpriv
->pcidev
) {
244 comedi_pci_disable(devpriv
->pcidev
);
246 pci_dev_put(devpriv
->pcidev
);
248 printk("comedi%d: " CNT_DRIVER_NAME
" remove\n", dev
->minor
);